Home / 1,273.32-1,899.05-1,251.45

Finding the Fourth Proportional to 1,273.32, 1,899.05 and 1,251.45

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Solution

The fourth proportional to 1,273.32, 1,899.05 and 1,251.45 is: 1,866.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.32 : 1,899.05 = 1,251.45 : x
  2. Step 2: Convert to fraction form
    1,273.32/1,899.05 = 1,251.45/x
  3. Step 3: Cross multiply
    1,273.32x = 1,899.05 × 1,251.45
  4. Step 4: Simplify right side
    1,273.32x = 2,376,559.87
  5. Step 5: Solve for x
    x = 2,376,559.87/1,273.32
  6. Step 6: Final answer
    x = 1,866.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.